Google Increases AdWords Sitelinks Options
Since 2009, Google has had AdWords Sitelinks and since then they have toyed with different formats.
Brett Tabke posted a thread at WebmasterWorld linking to a Google FAQ page on the various ads that qualify for sitelinks and the type of sitelinks available. It reads:

Yahoo Chair With a Google Pillow
Here is an interesting picture of a red Google pillow on top of a purple chair. As many of you know, Yahoo is known for their big purple chairs. Symbolizing here? The picture was posted on Flickr.